One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,3,4)(6,7)(8,12)(13,14)(15,16)(17,20)(18,19)(22,26)(24,31)(27,32)(30,35)(5,6,9,7)(8,10,12,11)(13,15)(14,17)(16,18)(19,20)(22,26)(23,29)(28,33)(30,35)(5,6,9,7)(8,11,12,10)(13,16,19,17)(14,20,18,15)(21,22,25,26)(23,27,29,32)(24,28,31,33)(30,34,35,36)(1,2)(3,4)(5,7,9,6)(8,11,12,10)(13,17,19,16)(14,20,18,15)(21,23)(22,27)(24,30)(25,29)(26,32)(28,34)(31,35)(33,36)(5,8)(6,10)(7,11)(9,12)(13,18,19,14)(15,16,20,17)(21,24)(22,28)(23,30)(25,31)(26,33)(27,34)(29,35)(32,36)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.